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Pis'ma v Zh. Èksper. Teoret. Fiz.:

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Pis'ma v Zh. Èksper. Teoret. Fiz., 2002, Volume 76, Issue 2, Pages 99–104 (Mi jetpl2868)  

This article is cited in 6 scientific papers (total in 6 papers)


Untwisting of the helical structure in a plane layer of chiral liquid crystal

V. A. Belyakov

L. D. Landau Institute for Theoretical Physics, Russian Academy of Sciences

Abstract: The untwisting of the helical structure of a chiral liquid crystal (CLC) in a thin plane layer exposed to an external action (temperature or field) and its dependence on the molecular adhesive forces at the layer boundaries are studied theoretically. It is shown that the critical electric (magnetic) field for complete untwisting in a thin layer may be appreciably lower than in the corresponding bulk CLC sample, and, contrary to the latter, the untwisting proceeds jumpwise. The expressions relating the jump temperature (field), i.e., the magnitude of untwisting action, to the CLC material parameters, layer thickness, and surface adhesive potential are given. The jump temperature (field) hysteresis is studied. In particular, it is shown that, for certain parameters, the untwisted helix remains untwisted after the removal of external action. The revealed qualitative regularities of untwisting are illustrated by numerical computations with the use of particular parameters of a CLC layer.

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English version:
Journal of Experimental and Theoretical Physics Letters, 2002, 76:2, 88–92

Document Type: Article
PACS: 61.30.Gd, 73.61.Ph
Received: 03.06.2002

Citation: V. A. Belyakov, “Untwisting of the helical structure in a plane layer of chiral liquid crystal”, Pis'ma v Zh. Èksper. Teoret. Fiz., 76:2 (2002), 99–104; JETP Letters, 76:2 (2002), 88–92

Citation in format AMSBIB
\by V.~A.~Belyakov
\paper Untwisting of the helical structure in a plane layer of chiral liquid crystal
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2002
\vol 76
\issue 2
\pages 99--104
\jour JETP Letters
\yr 2002
\vol 76
\issue 2
\pages 88--92

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    This publication is cited in the following articles:
    1. McKay G., “Unwinding of a Cholesteric Liquid Crystal and Bidirectional Surface Anchoring”, J. Eng. Math., 87:1 (2014), 19–28  crossref  zmath  isi  elib  scopus
    2. Heras Daniel de las, Velasco E., Martinez-Raton Yu., “Capillary and Winding Transitions in a Confined Cholesteric Liquid Crystal”, Soft Matter, 11:35 (2015), 7038–7045  crossref  isi  scopus
    3. Zakhlevnykh A.N., Shavkunov V.S., “Magnetic-field-induced stepwise director reorientation and untwisting of a planar cholesteric structure with finite anchoring energy”, Phys. Rev. E, 94:4 (2016), 042708  crossref  isi  elib  scopus
    4. M. N. Krakhalev, A. P. Gardymova, A. V. Emel'yanenko, Jui-Hsiang Liu, V. Ya. Zyryanov, “Untwisting of the helical structure of cholesteric droplets with homeotropic surface anchoring”, JETP Letters, 105:1 (2017), 51–54  mathnet  crossref  crossref  isi  elib
    5. Gvozdovskyy I., “Electro- and Photoswitching of Undulation Structures in Planar Cholesteric Layers Aligned By a Polyimide Film Possessing Various Values of the Anchoring Energy”, Liq. Cryst., 45:4 (2018), 536–552  crossref  isi  scopus
    6. Quemener M., Galstian T., Marmin T., Laroche V., Dory Y.L., “Electrically Controlled Fluorescence in a Nematic Liquid Crystal Doped By a Chiral Fluorophore”, J. Mater. Sci.-Mater. Electron., 29:23 (2018), 19768–19774  crossref  isi  scopus
  •       Pis'ma v Zhurnal ksperimental'noi i Teoreticheskoi Fiziki
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